@Vedran session problem ! when use another session saving strategy,may meet some problem

may be i found the solution ,but haven't tried it :
please read this doc carefully : http://kcfinder.sunhater.com/docs/integrate

in the kcfinder-2.51\core dir there is a autoload.php file. you should implements your own's SessionSaveHandler , this should be same logic with the yii's CDbHttpSession , so you should read the yii's session table and operate it from the SessionSaveHandler class these two class share the same table , yes may be this is the key!! but i haven't tried it . hope it help you!